06943940 is referenced by 4 patents and cites 24 patents.

An optical amplifier, or optical repeater, for amplifying wavelength division multiplexed (WDM) light. A first demultiplexer demultiplexes the WDM light into first and second lights corresponding to different wavelengths in the WDM light. First and second optical amplifiers amplify the first and second lights, respectively. A first multiplexer multiplexes the amplified first and second lights into a multiplexed light. A dispersion compensator compensates for dispersion in the multiplexed light. A second demultiplexer demultiplexes the dispersion compensated, multiplexed light into the first and second lights. Third and fourth optical amplifiers amplify the demultiplexed first and second lights, respectively. A second multiplexer multiplexes the amplified first and second lights from the third and fourth optical amplifiers into a WDM light. The optical amplifier can be configured so that the first and second lights travel through the dispersion compensator in opposite directions.

Title
Optical amplifier for amplifying a wavelength division multiplexed (WDM) light including light in different wavelength bands
Application Number
10/322584
Publication Number
6943940 (B2)
Application Date
December 19, 2002
Publication Date
September 13, 2005
Inventor
Yasushi Sugaya
Kawasaki
JP
Susumu Kinoshita
Kawasaki
JP
Agent
Staas & Halsey
Assignee
Fujitsu
JP
IPC
H04J 014/00
G02F 001/35
H04B 010/02
H01S 003/07
G02F 001/35
H04S 014/00
H01S 003/00
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